I keep knocking out #7 plug
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I keep knocking out #7 plug
My car keeps knocking out the #7 spark plug. It will idle for few minutes and knock it out every time. I have switched the coil pack and wire for the number one cylinder and the problem stayed on #7. All the other plugs look great. My next step is to swap the injector for one from #1 and see if it is the problem. Anyone have any other ideas if this doesn't work ?